Evenscripts: improvements to ctdb_service_check_reconfigure().

* Make this function applicable to "ipreallocated" event too.

* Monitor event should not always succeed just because we reconfigure.

  If the service was unhealthy before the reconfigure and we end the
  reconfigure with "exit 0" then we can cause the node's health status
  to flip-flop.

  To avoid this we return the status of the service from the previous
  monitor event.

Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 21dfcbbdccd906fcd6ab7bba81418ce565bf63aa)

ctdb/config/functions

@@ -689,11 +689,26 @@ service_reconfigure ()
 
 ctdb_service_check_reconfigure ()
 {
-    [ "$event_name" = "monitor" ] || return 0
+    # Only do this for certain events.
+    case "$event_name" in
+	monitor|ipreallocated) : ;;
+	*) return 0
+    esac
 
     if ctdb_service_needs_reconfigure "$@" ; then
 	ctdb_service_reconfigure "$@"
-	exit 0
+
+	# Fall through to non-monitor events.
+	[ "$event_name" = "monitor" ] || return 0
+
+	# We don't want to proceed with the rest of the monitor event
+	# here, so we exit.  However, if we exit 0 then, if the
+	# service was previously broken, we might return a false
+	# positive.  So we simply retrieve the status of this script
+	# from the previous monitor loop and exit with that status.
+	ctdb scriptstatus | \
+	    grep -q -E "^${script_name}[[:space:]]+Status:OK[[:space:]]"
+	exit $?
     fi
 }